Electrical measuring instrument.



` wl massa H. C2. RYPINSKI.

ELBOTBIOAL IBASUBIHG UBTBUIBIT.

nnxonxol nu lov. xs. no1.

` 985.456, Plnted Feb. 28. 1911.

Zm' @Uvfm tnarlfll) STATES-PATENT Qualen.

anuncie. nrrxnlxr. orrrr'r'nune. rmmsrnvama.. Autonoma? unam: Aalten. lll. I WIII'INCHOUIB ILECX'RIO IKANUIACIURIHG COMPANY. 0l IAII IMIURG. PENNSYLVANIA.

085,450. l Application dlcd November A CORIOIIATION 0l' PENNSYLVANIA.

ELEOTBICAL HEABURXNG INSTRUMENT.

Indication Letters Patent. l'tlitllfttl F01). 28. 101 1. i

l5, i907. Grill l0. O2-275.

Ib all whom it may roam-n.'

Beit known that T, Mariana: llvrtssal. u citizen ofthe Ul itedvhtates. uml a .resident of Pittsburg. in the county of Allegheny ami State'of Pennsylvania. have invented a new and useful Improvement in Eleetrieal Measuring Instruments. of which the following ia a l Y l. n i y invention relates to eleetrieal measurt 1o nur n lcation.

atrumenta, uml it hns for its objeet to provide eertain aunple. reliable and inexpensive struetural elelnenta'that may be readily and aeenrately assembled to prodnee an inexpensive instrmnent. whieh shall be more satisfactory in operation than instrumenta of the same general eharaeter heretoe fore prodneed.

Figure l of the aeeompauyiug drawing is a view, intranswerm` reet ion. ot a portion of an instrument embodying my invention. Fig. 2 is a face view. of tbe movable pointer of the instrument, and Fig. :t is a per.-apeev tive view of some of the inatrmneut.

The instrument eomprises a movable eoil l-wuund upon a substantially reetangular frame or bobhin Q that is threaded upon a polev piece Il of u permanent magnet eonstituting the stationary element of the instrument. The movable eoil andina bobbin are aupmrted hv 4means: of two substantially T- the movable parts ol' l 'shaped hraeiceta 5 and 6 two legs of eaeli of whit-h embraee the sides of the eoil andare cemented or otherwise -eured thereto though insulated therefrom. the remaining legs yi' and 8 extending outwardly from tbe coil in alim-ment with each other. 'llu` brackets 5 and t. are mumeeted.res|wetively,.

ll and 12 having, at their inner ends. benda l3- of 'hexagonal or other suitable torm the straight sides of whit-h are. plaeed against the outwardly extending legs 7 aud 8 of the brackets, pointed pivot-pins 14 and l5 being screw-threaded n the outer endaof l provided with sarlat-.ea seated against the rennnpmg legs of the posts. The outer endof the. post 1l is provided with a head itl ot' hexagonal or other f snitable form that projeets into a eorrespondlngly shaped reeeas or seat in the lut-Se of a pointer' 17 that is punhed nml formed from nl pieee of sheet maternal, the pivot-pin 14 serving to secure the'base -of the pointer to the post- 11.

The pointer other euitahlymhnped arm I8 having a target or index ttl at .ita outer end. the base thereoflwing provided with reves-ses .0 for the reception of Babbitt metal or other snitable material for balancing the pointer.

Bearings for the pivot-pins 14 and l5 are provided in the ends of serews Q1 and 22 that are threaded through stationary brackets 5l and .24 from whieh arms 25 and 26 extend .inwardly to provide lneauu for atationarily seeuriug the outer ends of the springs t) and l0. f

lt will be leen that the movable` system of the instrument nmy be readily and ncenrately assembled without. the use of jigs and simiiar deviees,l sinee the latrnctnre and arrangement of the parts are such that the pivot-piusamithe pointer will oeonpy oor reet and elinite positions with respect to the movable coil if the pnrtsare merely seeared together. as shown. 'lho manitfartnre of the instrument is. therefore. greatly faeilitated and rendered quite inexpensive.

l elaim as tn v invention:

1. An iuatruuu-ut4 pointer formed frmn heet material und rnmpriniug a ehnnnelshaped ituiex-earryiug arm, und a base having a seat or recess in one side to-reeeive a `Suppen-'timer member. and reeeaaea in uidvhaae to'reeeive material for balaneing th pointer.

Tn a umasuring instrument. tl e eombination with a substantially rm'taugularmov- -able ruil. of T-shaped braekets two lega of eaeh of wheh embrace and are seent'ed to the eoil. and posta` secured to the braekets and pivot-pins and with alining the hraeltet n.

3. ln a measuring itnrtrlnnenti. the rolnbination with u movable eol anl rupportitmgr braehetu therefor eonneeled tollhe-'termitmls thereof and having outwardly extend-ing arms. of pivot-pine carried by the braekets, and springs to which the said outwardly extending arms are, connected.

tuk

1T eomprises a ehannel 'or y secured to said brackets an has s poly nal outer enda .seat ,and :ends of f secure the j In 4: InsI measu'rn instvument, the combi nation with a move le colyandsupportinf brackets therefor having outwardly 'extent ing arms, of posts carryin ivot-pins and. secured to the brackets, an ving alinin surfaces seated against the said outwardlyI extending arms.

5. In a measuring instrument, the combination with a movable coil havingan le brackets secured to its ends, of outwar lv projecting posts which have solygonnl hemls one of which pointer having said -end is lvobplas screwed into the outer posts', .ons of which serves to pointer to its supportin post.

a pol gona recess in whic sai a measuring-instrument, t e combi-fi* oss,ase

nation with a rectangular movable coil having angle brackets secured to its upper corners, of outwardly projectillg' posts whivh `have poligonal heads secure i of said rockets and one of which has a polygonal outer end, a pointer havin" a polygonal recess in which said post-enc .is

ends of said posts, one of which' serves to .secure the pointer to its suporting post.

In testimony whereof, have hereunto subscribed my name this 7th day of November,

MAURICE C. RYPINSKI.

Witnesses: Wx. Bunsmw,

seated, und pivot-piusscrewed into the outer n the angles 

